Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Before
After
Before
After
Before
AfterFast, Reliable Duct Sealing Across Van Alstyne
Most Van Alstyne homeowners don’t realize their ducts are leaking until the summer electric bill arrives or a back bedroom never cools down. Duct sealing in Van Alstyne typically runs $450 – $850 for a whole-home seal, and our crews can usually assess the problem and quote the fix in a single visit. If you’re catching a musty smell when the AC kicks on in your Stonebridge or Mantua home, or your utility bills have climbed since move-in, the ductwork is the first place we’d look.
We’re the Van Alstyne crew for Hollis Air Duct Cleaning, dispatching from our Dallas-Fort Worth office with technicians who know the US 75 corridor well. We’ve worked in enough new subdivisions here to recognize the patterns: flex duct run through hot attics, joints left unsealed by builders, and insulation fibers pulled into living spaces once the system pressurizes. That local familiarity means we diagnose faster and fix it right the first time. Call (361) 326-5060 and we’ll get you scheduled.
Why Hollis Air Duct Cleaning Is Van Alstyne’s Preferred Duct Sealing Company
We’ve been handling Duct Sealing calls in this market long enough to know what Van Alstyne homeowners expect: show up inside the window, price it before touching anything, and stand behind the work. That’s The Garrison Standard, and it’s how every Hollis crew operates.
Our technicians are background-checked and uniformed, and you’ll know who’s arriving before they pull into your driveway. We don’t send day-laborers or subcontract the job out to whoever’s available. The same tech who quotes the seal is the one who performs it.
Phones get answered by a live person, 24 hours a day. No voicemail loops, no “leave a message and we’ll call back Monday.” If you’ve got a newborn in a nursery that won’t hold temperature, or you’re prepping a home for sale on the Van Alstyne market, that responsiveness matters.
Every repair we perform carries our 365-Day Done Right Promise in writing. If the seal fails within a year, we come back and make it right at no charge, including any second visit required. That’s not a verbal assurance; it’s printed on your invoice.
Duct Repair in Van Alstyne
Duct Repair in Van Alstyne usually means fixing sections of flex duct that have pulled loose from collars, patching holes where rodents or construction debris have damaged the line, or replacing crushed duct runs in tight attic spaces. In newer subdivisions along the US 75 corridor, we see a lot of repair work stemming from original installation shortcuts: ducts pinched against framing, supports spaced too far apart, or connections sealed with tape that’s already failing. A typical duct repair in Van Alstyne runs $180 – $340 for a single section fix, with whole-branch replacements ranging $280 – $520 depending on attic accessibility.
When Repair Makes Sense vs. Full Replacement
Single punctures, disconnected joints, or localized crush damage are straightforward repairs. We’ll cut out the damaged section, install a proper collar connection, and seal with mastic rated for your system’s operating pressure. If the duct run has multiple failure points or the original material is deteriorating across its length, we’ll tell you straight and quote replacement instead.
Attic Access Challenges in Newer Homes
Van Alstyne’s newer builds often have tight attic clearances and blown-in insulation that complicates repair work. Our crews carry extendable tools and work mats to protect your insulation layer while we access the damage. We don’t trample through and leave you with compressed, ineffective insulation.
Air Duct Sealing in Van Alstyne
Air Duct Sealing in Van Alstyne addresses the gaps, joints, and seams that leak conditioned air into your attic or crawl space before it ever reaches your rooms. We use mastic sealant and mechanical fasteners, not duct tape, because tape dries and fails under the temperature swings our Texas attics experience. A typical whole-home seal in Van Alstyne runs $450 – $850, with larger homes or complex zoned systems running toward the higher end. The work usually takes 3 – 5 hours, and we test before-and-after with a pressure gauge so you see the improvement in hard numbers.
Pressure Testing and Documentation
We measure duct leakage at the start and document the CFM loss. After sealing, we test again. You’ll see the numbers on your invoice. This isn’t guesswork; it’s how we verify the seal held and the system performs as designed.
Mastic vs. Tape: What Actually Lasts
Builders in fast-growing markets sometimes use foil tape on duct joints because it’s faster. In Van Alstyne’s attic heat, that tape degrades in 2 – 3 years. We apply water-based mastic rated for 200°F, brushed into every seam and reinforced with mesh where joints move. It’s slower to apply and it’s the right way to do it.
Trusted Brands We Service in Van Alstyne
Our trucks stock sealing products from Aprilaire, Abatement Technologies, and Guardsman, plus the mastics and mechanical fasteners that match what Rotobrush and Nikro systems require for proper integration. We don’t make you wait on a parts order from Dallas. For Van Alstyne homeowners, that means most seals and repairs complete same-day. If your system uses Honeywell zone dampers or Aprilaire filtration downstream of the ductwork, we seal around those components without disrupting their calibration. We also handle Air Duct Cleaning in Van Alstyne and Dryer Vent Cleaning in Van Alstyne if your full system needs attention beyond the seal.
Common Duct Sealing Problems We See in Van Alstyne Homes
- New construction shortcuts. In subdivisions like Stonebridge and Mantua, builders often run flex duct through attics without sealing every joint to the collar. After the first Van Alstyne summer, those gaps pull in attic dust and insulation fibers. Homeowners call us when they smell must every time the AC cycles.
- Condensation and biological growth. Van Alstyne’s humid subtropical climate means attics hit 140°F in July while the duct interior runs 55°F. Unsealed joints let humid attic air meet cold duct surfaces, creating moisture that supports mold. Sealing breaks that cycle.
- Older ranch-style homes near downtown. The pre-2000 housing stock in central Van Alstyne often has sheet metal trunks with original fibrous sealant that’s crumbling. These systems can lose 25 – 35% of conditioned air before it reaches the vents.
- Pressure imbalances from unsealed returns. When return ducts leak in the attic, the system pulls hot, dusty air back through wall cavities instead of from your rooms. Your filter never sees that debris, but your lungs do.
Pricing for Duct Sealing in Van Alstyne, TX
Whole-home duct sealing in Van Alstyne typically runs $450 – $850. Partial seals addressing a single branch or a problematic zone usually fall between $280 – $520. Duct repair for isolated damage starts around $180 and rarely exceeds $340 unless we’re replacing a long run through a difficult attic.
What moves the price: attic accessibility (blown insulation vs. walkable decking), number of duct branches, whether we need to seal both supply and return sides, and if your system requires access panel modifications. We don’t price per vent because that’s a bait-and-switch setup. We price per system, in writing, before any work starts.
Every Van Alstyne estimate is free. We’ll inspect the accessible ductwork, run a pressure test if indicated, and hand you a written quote. The number on that quote is the number on your final invoice. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Van Alstyne
Our crews regularly work in Anna, Westminster, Melissa, and Celina from the same dispatch base that covers Van Alstyne. If you’re in one of these neighboring communities and need duct sealing, the same pricing structure and 365-Day Done Right Promise apply.
Serving Van Alstyne, TX - Our Local Coverage Area
We’re based in the Van Alstyne area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Duct Sealing in Van Alstyne
We typically schedule Van Alstyne appointments within 2 – 4 business days, with dispatch coordinated from our Dallas-Fort Worth office. Call (361) 326-5060 for current availability; we’ll give you a specific date and arrival window, not a vague “sometime next week.”
Yes, we work throughout Van Alstyne, including Stonebridge, Mantua, and the newer developments along the US 75 corridor. Our crews are familiar with the access patterns and attic configurations common to each area’s build era.
We don’t classify duct sealing as an emergency service, but our phones are answered live 24/7. If you’ve lost cooling in July because a main trunk has separated, we’ll prioritize getting you scheduled and can often arrange next-day service.
Pricing is consistent across our Van Alstyne, Anna, Melissa, and Celina service area. The main cost drivers are home size and attic accessibility, not your ZIP code. A whole-home seal runs $450 – $850 regardless of which city you’re in.
Every duct seal we perform is covered by our 365-Day Done Right Promise. If the seal fails within one year, we return and correct it at no charge, including any second visit required. The terms are printed on your invoice, not implied.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Van Alstyne and the greater Dallas-Fort Worth area since 2004.